Filaments of Spirogyra placed in a beaker of water in a dark cupboard died because
- A. the filaments could not photosynthesize
- B. conjugation could not take place
- C. the temperature was too high
- D. the plant was overflooded
Analysis of the gut content of an animal showed that it contained small pieces of bone, seeds. roughages and insects. The animal is likely to be a/an.
- A. carnivore
- B. herbivore
- C. insectivore
- D. omnivore
Which of the following food substances gives the least amount of calories?
- A. Rice
- B. Groundnuts
- C. cabbage
- D. Egg yolk
An example of a dehiscent fruit is
- A. crotolaria
- B. tomato
- C. mango
- D. orange
The part Q the young root that (pushes its way through the soil is the
- A. root hair
- B. tap root
- C. root cap
- D. lateral root.
The process by which flowers produce fruit without the process of fertilization is called
- A. viviparity
- B. parthenocarpy
- C. propagation
- D. metamorphosis
The eyes can properly focus images of objects of various distances on the retina by a process called
- A. refraction
- B. reflection
- C. accommodation
- D. correction
Which of the following processes is not an example of a reflex ac ion?
- A. Blinking of the eye
- B. Reading
- C. Beating of the heart
- D. Sneezing
The part of the brain which controls and coordinates body posture is the
- A. cerebellum
- B. hypothalamus
- C. medulla oblongata
- D. pons varolii
The passage of nerve impulse across a synapse is facilitated by the secretion of
- A. acetylcholine
- B. thyroxin
- C. insulin
- D. progesterone
Plant hormones include the following except
- A. insulin
- B. auxin
- C. cytokinin
- D. gibberellin
Which of the following actions is note function of adrenaline? It increases
- A. body blood sugar by conversion of liver glycogen into glucose
- B. muscular power and resistance to fatigue
- C. the rate of heat
- D. the dilation of the pupils of the eye
Which of the following statements is not true about hormones?
- A. Hormones are manufactured in ductless glands and poured straight into the blood stream
- B. Hormones are carried by the blood plasma to the required Target organs
- C. Hormonal responses are usually instant and electrical
- D. Once the effects of hormones are over, they are inactivated and excreted from the body
The presence of glucose in the urine of a patent is an indication of malfunctioning of the
- A. pancreas
- B. gall bladder
- C. liver
- D. spleen
The process of regulating the amount of water and solutes in the body fluids is called
- A. osmosis
- B. diffusion
- C. osmoregulation
- D. homeostasis
In the adult frog gaseous exchange takes the
- A. buccal cavity, skin and lungs
- B. buccal cavity, skin and spiracles
- C. gills, skin and buccal cavity
- D. tympanic membrane, lungs and gills
Carbon dioxide is carried in the plasma?
- A. in combination with haemoglobin
- B. in combination with antibodies
- C. by capillary action
- D. as bicarbonate ion.
Which of the following parts of the skeleton does not have a protective function?
- A. Ribs
- B. Carpals
- C. Skull
- D. Pelvis
The structure labelled II is called
- A. deltoid ridge
- B. trochanter
- C. shaft
- D. trochlea
To form a ball and socket joint, the structure labeled I fits into another structure in the scapula
called the
- A. blade
- B. glenoid cavity
- C. olecranon fossa
- D. patella
Primary growth in plants is brought about by the activity of the
- A. meristem
- B. endodermis
- C. epidermis
- D. mesophyll